Facebook is many things to many people, and one of those things Facebook is is something of a political discussion forum, like it or not. People post their particular views, other people respond, and all that’s fine as long as people aren’t abusive. And here’s the rub, some take forceful responses as something they aren’t prepared to deal with.
Call me crazy, but I would think if all you want is a forum from which to spout your opinion, and are too thinned-skinned to suffer feedback, then maybe a public forum like Facebook isn’t for you. You should probably start a private blog instead of creating something like a public Facebook account which is designed specifically to be interactive.
Here’s a hint: If you post something that other people can read, those other people may respond… and they may not agree with you. Shocking, I know. Grow a thicker skin and get over it. If you find yourself blocking or unfriending people over it, maybe your convictions aren’t as strong as you think they are.